仁爱英语九年级上Unit2Topic2Section A.ppt

SectionA Alltheseproblemsareveryserious Unit2Topic2 学习目标 1 熟记新单词 学会运用新短语 2 学习不定代词和不定副词 情感目标 了解沙尘暴的形成及其危害 认识树木的重要性 提高环保意识 Review Readthenewwordsandreviewthepollutionaroundus waterpollution noisepollution airpollution soilpollution lightpollution litterwhitepollution forest Leadin Whathappenedtotheforest Peoplehavecutdowntoomanytrees Theforesthasgone What sworse theforesthaschangedintodesert n 沙漠v 舍弃 遗弃 Thewindisblowingstronglywithlotsofsand wecallitsandstorm n 沙 n 沙尘暴 Washtheearthaway manytrees changeintodesert forestgone sandstormscomeintobeing cutdowntrees 4 1 5 3 6 2 思考 Howdoesthesandstormcomeintobeing 形成 产生 Self study 小组讨论 完成自主学习 1 Enjoytheflash35 1a swfandchoosethebestanswer 2 Changethewordintocorrectforms 3 Readthedialog underlinethephrasesandtranslatethem 1 Theboyandgirlsaretalkingabout B 2 词形变换 变为名词 pollute 变反义词 outside 变同义词 prevent though rubbish pollution inside stop although litter 展示 Showmeyouranswers 3 短语翻译 1 刚才 2 不能看见任何东西 3 砍伐太多的树木 4 结果 5 大量富饶的土地 6 变成 7 阻止大风刮走泥土 8 阻止流水冲走泥土 9 对 有害 10 人类 justnow can tseeanything cutdowntoomanytrees beharmfulto stopthewindfromblowingtheearthaway change into asaresult justnow stopthewaterfromwashingtheearthaway humanbeing Treescanstopthewindfromblowingtheearthaway Treescanalsostopthewaterfromwashingtheearthaway Read1aandcompletetrees functions B Alotofwatercanbesavedbyforests A Treescanstopthewindfromblowingtheearthaway C Treescanalsostopthewaterfromwashingtheearthaway Group work 小组讨论 分析以下句子 并总结短语的用法 展示学生成果 叫同学讲解并用投影仪展示讨论结果 2 Asaresult alotofrichlandhaschangedintodesert 结果 许多肥沃的土地已经变成了沙漠 点拨 a change into 把 变成 turn into 把 转 变成 e g PleasechangeEnglishintoChinese 请把英语变成汉语 练习 我们可以把冰变成水 Wecan ice water 1 Whatbadweather 点拨 What引导的感叹句 a What 形容词 不可数名词 可数名词复数 不可数名词如 news advice weather water b What a an 形容词 可数名词单数 练习 1 多么繁忙的一天呀 2 多么清澈的水呀 重点讲评 Whatabusyday Whatcleanwater change water 3 Treescanstopthewindfromblowingtheearthaway 树可以防止大风刮走泥土 Treescanalsostopthewaterfromwashingtheearthaway 也可防止流水冲走泥土点拨 stopsb sth from doingsth preventsb sth from doingsth 阻止 做某事链接 同义词组keepsb sth fromdoingsth 阻止 做某事 from不能省略 练习 大雨使我们无法外出 Theheavyrainusgoingout stops Theheavyrainpreventsusformgoingout Theheavyrainkeepsusformgoingout form 4 Cuttingdowntreesisharmfultohumanbeings animalsandplants 译 思考 cuttingdowntrees是 短语在句子中作 语 谓语用 数 练习 阅读是我的爱好 myhobby 5 不定代词和不定副词 一 不定代词 指人 someone somebodyanyone anybodynoone nobodyeveryone everybody指 somethinganythingnothingeverything 二 不定副词 somewhereanywherenowhereever 动词 单 主 Reading is 砍伐树木对人类 动物和植物有害 1 Weshouldhumansdestroyingtheenvironment A keep byB stop toC prevent byD stop from 2 Ihavetowaitforthetrafficlightstogreen ThenIcangoonwalking A changeB changedC changetoD changinginto 3 Theheavyrainusfromfinishingthework A protected B preventedC movedD made 4 Thedriverwasbadlyhurt ofthetrafficaccident A ataresultB intheresultC withtheresultD asaresult 5 alwayshelpsothers sheisverybusy A butB andC althoughD because 6 Wemustplantmoretreesafterwe everyyear A cutoffthemB cutthemoffC cutdo